Handheld Salinity Refractometer

The STX-3 is a handheld, portable, water-resistant salinity refractometer that measures salt concentration in parts per thousand (PPT) in the 0 to 100% range and specific gravity (SG) of seawater in the 1.000 to 1.070 range, has automatic temperature compensation (ATC), and a durable metal body with rubber grip. A salinity refractometer measures the concentration of salt, such as sodium chloride, magnesium and calcium sulfates, in liquids and displays the results.

Each order comes with a zippered vinyl carrying case, a plastic transfer pipet, and an instruction manual.

                                                                                                                                      Key Features

  • Large, Sharp Display Scales with high contrast
  • High-quality optical glass material for consistent, accurate readings
  • Durable, industrial-grade design with non-roll stand feature to keep unit secure on flat surfaces
  • Tactical, non-slip Rubber Grip on body to block transmission of hand heat reducing temperature effects
  • Prism encased in all-metal housing allowing sample and prism to reach temperature equilibrium quickly
  • One-Year Warranty

                                                                                                                     Specifications Chart

Scale 1 Type Salinity
Scale 1 Range 0 to 100 ppt
Scale 1 Resolution 1 ppt
Scale 1 Accuracy ±1 ppt
Scale 2 Type Specific Gravity (Seawater)
Scale 2 Range 1.000 to 1.070
Scale 2 Resolution 0.001
Scale 2 Accuracy ±0.001
Temperature Compensation 10 to 30°C
Dimensions 7.28 x 1.57 x 1.57 in. (185 x 40 x 40 mm)